Product Identification

Synonyms: Sulfuric acid, zinc salt (1:1) heptahydrate; Zinc vitriol, heptahydrate; Zinc sulfate, heptahydrate
CAS No.: 7733-02-0 (Anhydrous) 7446-20-0 (heptahydrate)
Molecular Weight: 287.56
Chemical Formula: ZnSO4.7H2O
Product Codes: J.T. Baker: 4382, 4383, 4384
Mallinckrodt: 7805, 8872, 8880                                                     

2. Composition/Information on Ingredients

 Ingredient                                CAS No         Percent        Hazardous                                    ---------------------------------------   ------------   ------------   ---------      Zinc Sulfate                              7733-02-0          100%          Yes                                                                

3. Physical and Chemical Properties

Appearance:         
Colorless crystals or granules.
Odor: Odorless.      
Solubility: Soluble in water.
Specific Gravity: 1.97                                                                 
pH: ca. 4.5 Aqueous solution
% Volatiles by volume @ 21C (70F): 0
Boiling Point:
> 500C (> 932F) Decomposes.
Melting Point:
100C (212F) Loses all water at 280C.
Vapor Density (Air=1):
No information found.
Vapor Pressure (mm Hg):
No information found.
Evaporation Rate (BuAc=1):
No information found.

4. Stability and Reactivity

Stability:                                 
Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
Oxides of sulfur and oxides of zinc. Reacts with water to form sulfuric acid.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Lead, calcium, strontium salts, borax, alkali carbonates and hydroxides, silver protein and tannins.
Conditions to Avoid:
Heat, moisture, incompatibles.